/* ===== 色彩系统 ===== */
:root {
    --primary: #1e4f8a;
    --primary-dark: #173d6a;
    --primary-light: #4a7fb0;
    --secondary: #2c3e50;
    --accent: #00a6c4;
    --accent-alt: #f8b500;
    --light: #f8fafc;
    --dark: #1e293b;
    --gray: #64748b;
    --border: #e2e8f0;
    --primary-10: rgba(30, 79, 138, 0.1);
    --primary-20: rgba(30, 79, 138, 0.2);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: #f5f7fa;
            color: var(--dark);
            line-height: 1.6;
            min-height: 100vh;
            min-width: 1250px;
        }
        
        .container {
            max-width: 1250px;
            width: 100%;
            margin: 0 auto;
            padding: 0 20px;
            box-sizing: border-box;
        }
        
        /* ===== 服务横幅 ===== */
        .service-banner {
            background: white;
            border-radius: var(--radius-xl);
            padding: 30px;
            margin: 20px 0 30px;
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .service-banner:hover {
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }
        
        .service-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        
        .banner-content {
            display: flex;
            align-items: center;
            gap: 25px;
        }
        
        .banner-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 36px;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
        }
        
        .service-banner:hover .banner-icon {
            transform: rotate(5deg) scale(1.05);
        }
        
        .banner-text h1 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        
        .banner-text p {
            color: var(--gray);
            font-size: 14px;
        }
        
        .banner-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-top: 20px;
        }
        
        .banner-feature {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 15px;
            background: var(--light);
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .banner-feature:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            background: white;
        }
        
        .banner-feature i {
            color: var(--primary);
            font-size: 16px;
        }
        
        /* ===== 主内容区域 ===== */
        .main-content {
            display: grid;
            grid-template-columns: 320px 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        
        /* 左侧功能区 */
        .function-sidebar {
            background: white;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        
        .function-sidebar:hover {
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }
        
        .function-header {
            background: #f8fafc;
            color: var(--primary);
            padding: 20px 25px;
            border-bottom: 1px solid var(--border);
        }
        
        .function-title {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .function-title i {
            font-size: 20px;
            background: var(--primary-10);
            color: var(--primary);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
        }
        
        .function-title h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        
        .function-title p {
            font-size: 12px;
            color: var(--gray);
            margin-top: 5px;
        }
        
        .function-body {
            padding: 20px;
        }
        
        .function-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .function-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 15px 18px;
            background: var(--light);
            border-radius: var(--radius-md);
            text-decoration: none !important;
            color: var(--dark) !important;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        
        .function-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 3px;
            height: 100%;
            background: var(--primary);
            transform: scaleY(0);
            transition: transform 0.3s ease;
        }
        
        .function-item:hover {
            background: white;
            border-color: var(--primary-20);
            transform: translateX(5px);
            box-shadow: var(--shadow-md);
        }
        
        .function-item:hover::before {
            transform: scaleY(1);
        }
        
        .function-item.active {
            background: white;
            border: 2px solid var(--primary-20);
            box-shadow: var(--shadow-sm);
        }
        
        .function-item.active::before {
            transform: scaleY(1);
        }
        
        .function-item i {
            color: var(--primary);
            font-size: 18px;
            width: 20px;
            min-width: 20px;
        }
        
        .function-item span {
            font-size: 14px;
            font-weight: 500;
        }
        
        /* 功能区补充内容 */
        .function-info {
            margin-top: 20px;
            padding: 15px;
            background: var(--light);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent);
            transition: all 0.3s ease;
        }
        
        .function-info:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        .function-info h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .function-info h4 i {
            color: var(--accent);
        }
        
        .function-info p {
            font-size: 12px;
            color: var(--gray);
            margin-bottom: 5px;
        }
        
        /* 功能区底部统计 */
        .function-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-top: 20px;
        }
        
        .stat-item {
            background: var(--primary-10);
            border-radius: var(--radius-sm);
            padding: 12px;
            text-align: center;
            transition: all 0.3s ease;
        }
        
        .stat-item:hover {
            background: var(--primary-20);
            transform: translateY(-2px);
        }
        
        .stat-number {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        
        .stat-label {
            font-size: 11px;
            color: var(--gray);
            font-weight: 500;
        }
        
        /* 热门查询模块 */
        .function-quick {
            margin-top: 20px;
            padding: 15px;
            background: var(--light);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent-alt);
            transition: all 0.3s ease;
        }
        
        .function-quick:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        .function-quick h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .function-quick h4 i {
            color: var(--accent-alt);
        }
        
        .quick-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .quick-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            background: white;
            border-radius: var(--radius-sm);
            text-decoration: none;
            color: var(--dark);
            transition: all 0.3s ease;
            border: 1px solid var(--border);
            cursor: default;
        }
        
        .quick-item:hover {
            transform: translateX(3px);
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-20);
        }
        
        .quick-item i {
            color: var(--primary);
            font-size: 16px;
            width: 20px;
        }
        
        .quick-item span {
            font-size: 13px;
            font-weight: 500;
        }
        
        /* 右侧内容区域 */
        .content-main {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        /* 表单卡片 */
        .form-card {
            background: white;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        
        .form-card:hover {
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }
        
        .form-header {
            background: #f8fafc;
            color: var(--primary);
            padding: 20px 25px;
            border-bottom: 1px solid var(--border);
        }
        
        .form-title {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .form-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-10);
            color: var(--primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: all 0.3s ease;
        }
        
        .form-card:hover .form-icon {
            transform: scale(1.1);
        }
        
        .form-title h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        
        .form-title p {
            font-size: 12px;
            color: var(--gray);
        }
        
        .form-body {
            padding: 30px;
        }
        
        /* 表单样式 */
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
            font-size: 13px;
        }
        
        .form-label.required::after {
            content: " *";
            color: #dc2626;
        }
        
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius-md);
            font-size: 14px;
            transition: all 0.3s ease;
            background: var(--light);
        }
        
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-20);
            background: white;
            transform: translateY(-1px);
        }
        
        .captcha-row {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 10px;
        }
        
        .captcha-box {
            width: 140px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            cursor: pointer;
            user-select: none;
            transition: all 0.3s ease;
            min-height: 48px;
        }
        
        .captcha-box:hover {
            transform: translateY(-2px) rotate(2deg);
            box-shadow: var(--shadow-md);
        }
        
        .btn-submit {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            border: none;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 20px;
            position: relative;
            overflow: hidden;
        }
        
        .btn-submit::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: 0.5s;
        }
        
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        .btn-submit:hover::before {
            left: 100%;
        }
        
        .btn-submit:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
        
        /* 功能面板 */
        .feature-panel {
            display: none;
        }
        
        .feature-panel.active {
            display: block;
            animation: fadeIn 0.4s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        /* 模态框样式 */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .modal-container {
            background: white;
            border-radius: var(--radius-xl);
            width: 90%;
            max-width: 450px;
            overflow: hidden;
            transform: scale(0.9);
            transition: transform 0.3s ease;
            box-shadow: var(--shadow-xl);
        }
        
        .modal-overlay.active .modal-container {
            transform: scale(1);
        }
        
        .modal-header {
            background: linear-gradient(135deg, #ef4444, #dc2626);
            color: white;
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .modal-header i {
            font-size: 24px;
        }
        
        .modal-header h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0;
        }
        
        .modal-body {
            padding: 25px;
            text-align: center;
        }
        
        .modal-body p {
            color: var(--dark);
            font-size: 15px;
            line-height: 1.6;
            margin: 0;
        }
        
        .modal-footer {
            padding: 15px 25px 25px;
            text-align: center;
        }
        
        .modal-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .modal-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        /* 说明卡片 */
        .info-card {
            background: white;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        
        .info-card:hover {
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }
        
        .info-header {
            background: #f8fafc;
            color: var(--primary);
            padding: 20px 30px;
            border-bottom: 1px solid var(--border);
        }
        
        .info-title {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .info-title i {
            font-size: 18px;
            background: var(--primary-10);
            color: var(--primary);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
        }
        
        .info-card:hover .info-title i {
            transform: rotate(15deg);
        }
        
        .info-title h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        
        .info-title p {
            font-size: 12px;
            color: var(--gray);
        }
        
        .info-body {
            padding: 30px;
        }
        
        .info-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        
        .info-item {
            display: flex;
            gap: 12px;
            padding: 15px;
            background: var(--light);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
        }
        
        .info-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            background: white;
        }
        
        .info-icon {
            width: 40px;
            height: 40px;
            min-width: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        
        .info-icon i {
            color: white !important;
        }
        
        .info-item:hover .info-icon {
            transform: scale(1.1);
        }
        
        .info-content h4 {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--dark);
        }
        
        .info-content p {
            font-size: 12px;
            color: var(--gray);
            margin-bottom: 0;
        }
        
        /* 页脚样式 */
        footer {
            background: var(--primary);
            color: white;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        
        .friend-link {
            max-width: 1250px;
            margin: 0 auto;
            padding: 0 30px;
        }
        
        .friend-link h4 {
            font-size: 16px;
            margin-bottom: 15px;
            color: rgba(255, 255, 255, 0.9);
        }
        
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .link-list a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            font-size: 12px;
            transition: all 0.3s ease;
        }
        
        .link-list a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 20px;
        }
        
        .copyright p {
            margin: 8px 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
        }
        
        .copyright a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }
        
        .copyright a:hover {
            color: white;
        }
        
        .form-label i {
            color: var(--primary);
            font-size: 14px;
            transition: all 0.3s ease;
        }
        
        .form-label:hover i {
            transform: scale(1.1);
            color: var(--accent);
        }